Transom control.



Patented June 19, 1917.

l N V ENTO R 'eorgew a i ATTORNEYS V I d G. W. BAIRD.

TRANSGM CONTROL.

APPLICATION man JAN-10,191!- co., PHO'IO-LITNQ. WAsmNcmM, 0. c4

NHRRIS PEfERS UNITED STATES PATENT OFFICE.

GEORGE W. BAIRD, OF WASHINGTON, DISTRICT OF COLUMBIA.

TRANSOM CONTROL.

Application filed January 10, 1917.

To all whom it may concern:

Be it known that I, GEORGE W. BAIRD, residing in the city of Washington and District of Columbia, have invented a new and Improved Transom Control, of which the following is a specification.

This invention has reference to improvements in transom control or adjusting devices of that type in which the transom or window is swung to a closed or open position by rod, chain or cord pulls located along the door or window frame and my said invention primarily has for its purpose to provide a new and improved transom control or device of a few parts, simple and inexpensive in their construction and which are particularly designed that they may be conveniently applied for use on the transom and the door frame without the aid of any special tools or implements.

Another object of my invention is to provide an improved transom opening and closing means, in which is included a casting having a peculiarly arranged pair of bearings for receiving a pair of pulleys, relatively so held, that when the casting is applied for use over the top of the transom the said pulleys form guides for the flexible pull, preferably a chain, and sustain the said pull chain in such manner, whereby, when operating the chain, a positive and direct lift pull is applied to the transom, the chain held for freely passing over the said guide pulleys and from accidently slipping off the pulley grooves or seats. 7

With other'objects in view that will hereinafter appear, my invention embodies the peculiar construction and novel arrangement of the parts-that will be first described in detail, then specifically pointed out in the appended claims and illustrated in the accompanying drawings, in which:

Figure 1 is a perspective view of my transom control devices, so much of a transom and door frame being shown as is necessary to illustrate a practical application of my invention.

Fig. 2 is a front elevation thereof.

Fig. 3 is a vertical cross section taken substantially on the line 3-3 on Fig. 2 and looking in the direction of the arrow.

In the drawing, 1 designates what I term the main bracket casting, since it carries the transom sustaining and pull chain guide pulley 2 and the pull chain guide pulley 3 and, at this point, it should be stated the Specification of Letters Patent. Patented J 11116 19, 1917.

Serial No. 141,643.

manner in which the two pullies 2 and 3 are coperatively mounted upon the said main casting 1, forms one of the essential features of this invention.

The casting 1 is in the nature of a fiat body, is substantially square in face view and at three of its corners has apertures 10 for the convenient application of the ordinary wood screws, when applying the said bracket in the operative position on the outermost corner of the transom framing, as is clearly indicated in Fig. 1.

When fitting my improved transom control devices to a door frame that is being built up, the bracket and casting may be mortised into the frame, as shown in Fig. 1, it being however, understood, that when the control devices are to be applied to finished door frames, the said casting is screwed onto the face of the door frame, as is clearly indicated in Figs. 2 and 3.

Casting 1, at the outermost upper end, is formed with an internally threaded aperture boss 10, against which is held, the transom sustaining pulley 2 and the said pulley is j ournaled on a screw stud l, the screw portion 40 of which that engages the threaded aperture 10 in the boss 1O being wedged tight by punch tapping the outer end of the screw, as indicated by w on Fig. 3.

As is clearly shown in Fig. 1, the main pulley 2 is so positioned and is of such diameter that its outer peripheral edge is sufliciently projected beyond the outer end of the transom opening to provide for the convenient placing of a flexible pull. which may be a wire rope or chain, but preferably a chain 6, as shown, and when a chain. the groove 20 in the pulley 2 is shaped to suit the particular style of chain used.

The combined guide and keeper pulley 3 which is of smaller diameter than the main or transom sustaining pulley 2, is disposed at right angles, that is, edgewise to the pulley 2, in a vertical plane, and in a line tangential to the inner peripherial edge of the said pulley 2, as is clearly shown in Figs. 2 and 3, from which it will be also seen the said pulley 3 is journaled on a cross pin 7 mounted in the apertured end 80, of bearing members 8 that extend from the face of the bracket 1.

11 designates cotter pins that hold the cross pin 7 in place in bearings 8.

12 denotes a notched keeper or angle bracket that is located at any suitable point along the side of the door frame for locking the pull chain at any of its required adjustments.

13 designates a bracket that includes a base 13 having screw receiving apertures for conveniently attaching the bracket to the upper outer edge of the transom and the said bracket also includes an outwardly projected extension that terminates in an up turned end formed with an aperture 14: for receiving an eye bolt 15 secured by a nut 16 and locked with the nut by slightly riveting the end of the bolt over the nut, as indicated in Fig. 3.

A socket 17 is drilled into the upper inner edge of the transom to receive a coil spring 18, that is secured in the socket by a screw 19. In practice, the tension of the spring 18, when under compression, as indicated in Fig. 3, is suflicient to force the transom out when the pull chain is released, untilit falls by gravity.

From the foregoing taken in connection with the drawing, the complete construction, the mannercof its operation and the advantages of my invention will be readily apparent.

The entire device consists of but few simple parts that may be readily applied for use.

The arrangement of the two pulleys is such that a positive direct or vertical rais-v ing or lowering of the lift chain, (attached to the bolt 15,) is provided for, with little or no undue friction on the pulleys and with the pull chain so guided that danger of its slipping out of thegroove of either pulley is positively overcome.

What I claim is:

1. A transom opening and closing mechanism consisting of a plate adapted to be secured to the door frame above the transom and adjacent to on side of the transom and door opening, means for securing said plate to the door frame, a screw stud secured in said plate, of a pulley mounted on said stud to lie flatwise against said plate parallel to the plane of the door frame, a flexible Gopies of this patent may he obtained for five cents each, by addressing the Washington, D. 0.

sustaining pull member taking over said pulley, forwardly projecting ears on said plate, a guide pulley mounted between said ears to lie in a plane at right angles to that containing said first mentioned pulley, said flexible pull member adapted to pass between said lugs in engagement with said guide pulley, a bracket having a member secured to the transom and extending outwardly therefrom toward said guide pul-. ley, the end of said bracket adapted to lie in close proximity to said guide pulley when the transom is closed, said flexible pull member being secured at one end to said bracket, the other end of said flexible guide member extending down to a place in Convenient reach, and means on the door frame for en-V gaging said flexible 1 11 member to hold the same and maintain the transom open or closed according to the position at which it is desired to adjust the same.

2. A transom opening and closing mechanism consisting of a supporting plate adapted to be secured to the door frame above the transom and adjacent to one side of the transom and door opening, means for securing said plate to the door frame, a sustaining pulley mounted on said plate to lie parallel and in close proximity to the same, a guide pulley mounted on the plate in a plane at right angles to the sustaining pulley, a flexible sustaining pull member taking over the sustaining pulley and under the guide pulley, a bracket secured to the transom and extending therefrom, means for securing the end of said pull member that passes over the guide pulley to said bracket, said bracket adapted to lie in the plane of said guide pulley, said flexible pull member at its other end extending down to a place in convenient reach, and means on the door frame for engaging said flexible pull member to hold the same and'maintain the transom open or closed according to the position at which it is desired to adjust the same.

GEORGE W. BAIRD.

Commissioner of Patents, 

